CN104358211A - Beam bottom overhaul platform capable of spanning bridge piers and obstacle pillars and use method of beam bottom overhaul platform - Google Patents
Beam bottom overhaul platform capable of spanning bridge piers and obstacle pillars and use method of beam bottom overhaul platform Download PDFInfo
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- CN104358211A CN104358211A CN201410548268.9A CN201410548268A CN104358211A CN 104358211 A CN104358211 A CN 104358211A CN 201410548268 A CN201410548268 A CN 201410548268A CN 104358211 A CN104358211 A CN 104358211A
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- bridge
- truss
- post
- lift
- pier
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention belongs to the technical field of bridge engineering, and in particular relates to a beam bottom overhaul platform capable of spanning bridge piers and obstacle pillars and a use method of the beam bottom overhaul platform. The beam bottom overhaul platform comprises pillar spanning truss trolleys, pier pillar spanning hanging racks, hoisting systems and connecting units, wherein the pillar spanning truss trolleys comprise two pairs of truss trolleys which are positioned on the inner sides of guardrails on two sides of a bridge, are capable of moving in the direction of the bridge and are arranged in symmetry; a plurality of detachable cantilever rods stretch outwards from one side adhering to the guardrails, of each truss trolley; the pier pillar spanning hanging racks are suspended on the cantilever rods on each pair of the truss trolleys through the hoisting systems; adjacent pier pillar spanning hanging racks are connected through the connecting units; the pier pillar spanning hanging racks comprise a plurality of truss units which are arranged in the direction of the bridge; adjacent truss units are in detachable fixed connection. The beam bottom overhaul platform has the advantages of high applicability, simple operation, good security, good economic property, good application prospect and the like.
Description
Technical field
The invention belongs to technical field of bridge engineering, be specifically related to a kind ofly cross over inspection platform and using method thereof at the bottom of the beam of bridge pier and barrier post.
Background technology
Along with the development that Bridges in Our Country is built, nearly 1,000,000 bridge blocks in speedway and city enter regular detection and maintenance stage, its construction task is very arduous, in detection at the bottom of Bridge Beam and maintenance construction, the operation platform that it is highly important that safety, economy and adapt to, for different bridge overviews, existing operation platform has fixed platform at the bottom of suspension bracket and beam under beam lower supporter, bridge inspection vehicle, bridge.
When under-clearance is lower, adopt beam lower supporter relatively good, but when under-clearance is higher, adopt beam lower supporter just to need more braced structures, obviously uneconomical, inadvisable.
In short-period used situation; it is rational for adopting bridge inspection vehicle to replace beam lower supporter platform to use; but under long-term execution conditions; adopt bridge inspection vehicle obviously uneconomical; particularly when there is more obstacle bridge side, or sidewalk, bridge both sides and nonmotorized vehicle lane width more than 3.5m time, bridge inspection vehicle uses and receives a lot of restriction; the demand of normal construction can not be met, now usually to select to adopt under bridge fixed platform at the bottom of suspension bracket or beam.
For porous bridge on highway and urban viaduct, (majority is that the aperture of ten meter levels is across pier stud type bridge, some bridge lengths reach several kilometers) large area at the bottom of beam is when overhauling for a long time, under common bridge, at the bottom of suspension bracket and beam, fixed platform no longer adapts to, fixed platform is not easy to set up, and can not have enough to meet the need on a large scale, to be uneconomically also not suitable with; Though suspension bracket can have enough to meet the need under bridge, but by the restriction of bridge pier (post) under bridge flanking obstacle (lamppost, traffic markstone post, drag-line, suspension rod etc.) and bridge, under bridge, suspension bracket cannot move along the bridge continuously on the one hand, a suspension bracket installation and removal is all carried out under the every bridge of usual need, under bridge on the other hand under some spanning, suspension bracket cannot be installed by crane gear, obviously under existing bridge, suspension bracket is uneconomical is also not suitable with, and can not meet instructions for use.
Summary of the invention
Object of the present invention is exactly the deficiency existed to solve above-mentioned background technology, provides inspection platform and using method thereof at the bottom of the beam of a kind of simple to operate, applicability is strong, safety is good bridge pier crossed over and barrier post.
The technical solution used in the present invention is: a kind ofly cross over inspection platform and using method thereof at the bottom of the beam of bridge pier and barrier post, comprise across post purlin car, across pier stud suspension bracket, Lift-on/Lift-off System and linkage unit, describedly comprise two to being positioned at the truss car that can be arranged symmetrically along moving along the bridge inside bridge guardrails of both sides across post purlin car, described truss traffic allowance closes the protruding multiple dismountable cantilever lever in side of guardrail, hang across pier stud suspension bracket under cantilever lever on often pair of truss car is common respectively by Lift-on/Lift-off System, adjacent is connected by linkage unit across between pier stud suspension bracket, described across pier stud suspension bracket comprise multiple along direction across bridge arrange truss element, detachablely between adjacent truss element to be fixedly connected with.
Further, described truss car comprises vertical pole, cross bar, montant, the first hound, the second hound, shifting roller, lateral connection bar, longitudinal connecting rod and connector; Described vertical pole, cross bar, montant, the first hound and the second hound are fixedly connected to form square trussed construction, described trussed construction inside is provided with balancing weight, described trussed construction height is higher than guardrail height, described shifting roller is arranged at bottom montant, the cross bar at described trussed construction top is fixedly connected with connector near one end of guardrail, the connector other end and lateral connection bar one end are fixedly connected to form cantilever lever, are fixedly connected with between the other end of many lateral connection bars by longitudinal connecting rod.
Further, be all bolted between described cross bar and connector, between connector and lateral connection bar.
Further, described truss element comprises three girder trusses, described three girder trusses are along suitable bridge to being arranged side by side, described girder truss is arranged along direction across bridge direction perpendicular to bottom bridge, connected by level connection joint sheet between bottom adjacent girder truss, level connection joint sheet lays support plate, connected by vertical brace between described girder truss end, described girder truss is made up of one or more pieces standard purlin sheets, and described level connection joint sheet arranges multiple suspension centre be connected with Lift-on/Lift-off System.
Further, described standard purlin sheet comprises two-layer, and lower floor is stress frame structure, and upper strata is armrest; Described lower floor comprises upper chord, lower chord, montant, brace, rotation structure, cloudy head and positive head, described upper chord, lower chord, montant and brace are fixedly connected to form stress frame structure, one end of upper chord and lower chord is provided with positive head, the other end is provided with cloudy head, is fixedly connected with between adjacent standard purlin sheet by positive head with cloudy head cooperation; Described armrest comprises column, handrail and rotating shaft, and described upper chord is fixedly connected with by rotating structure with between rotating shaft, and the column bottom at described armrest two ends is equipped with the fixing card of folding, fixedly fastens connection between adjacent armrest by folding.
Further, described level connection joint sheet comprises tie-beam and longeron, described in connect between beam and longeron and be fixedly connected with by gusset plate, described gusset plate is provided with the connecting bolt for connecting with standard brace; Described vertical brace is the cage construction be made up of upper chord, lower chord, montant and brace.
Further, Lift-on/Lift-off System comprises many lifting ropes, controller and multiple Chain block or electric block, and described many lifting ropes match with multiple Chain block or electric block respectively, and described controller controls the operation of multiple Chain block or electric block.
Further, described linkage unit is for forming skeleton platform by shaped steel or truss and expanded metal lath or plate class, described linkage unit is provided with multiple, multiple linkage unit is disposed on two across between pier stud suspension bracket along direction across bridge, spacing between adjacent linkage unit is greater than pier column diameter, and the bed board by laying between adjacent linkage unit is connected.
A using method for inspection platform at the bottom of beam, is characterized in that, comprises the following steps:
Step 1: install inspection platform bottom bridge floor and bridge;
Step 2: control Lift-on/Lift-off System lifting inspection platform carries out long working construction to the height in Job Operations face;
Step 3: after single span has been constructed, transfers below inspection platform to bent cap height by Lift-on/Lift-off System;
Step 4: synchronously start four, bridge floor across post purlin car along bridge to walking, under drive bridge, inspection platform moves and moves along the bridge, when inspection platform move to first across pier stud suspension bracket truss element along bridge to first girder truss can touch bridge pier cylinder time, the suspension centre on the level connection joint sheet of the direction across bridge side corresponding with it is loosened by controller, power is transformed on other suspension centre, removes first girder truss and the first level connection joint sheet that connect corresponding to it;
Step 5: when the bridge floor that walks on can touch bridge pier cylinder across post purlin car to second girder truss of truss element, connect first girder truss, tightened up the suspension centre on the level connection joint sheet of the direction across bridge side corresponding with it by controller; Loosen the suspension centre on the girder truss of the direction across bridge side corresponding with second girder truss simultaneously, power is transformed on other suspension centre, removes second girder truss and the second level connection joint sheet that connect corresponding to it;
Step 6: when the bridge floor that walks on can touch bridge pier cylinder across post purlin car to the 3rd purlin sheet beam of truss element, connect second girder truss and the first level connection joint sheet, tightened up the suspension centre on the level connection joint sheet of the direction across bridge side corresponding with it by controller; Loosen the suspension centre on the girder truss of the direction across bridge side corresponding with the 3rd girder truss simultaneously, power is transformed on other suspension centre, removes the 3rd girder truss; Now to walk on across post purlin car until first departs from pier column completely across pier stud suspension bracket, connect the second level connection joint sheet and the 3rd girder truss;
Step 7: the bridge floor that walks on, across post purlin car, completes second across pier stud suspension bracket overpass bridge pier stud according to step 4-6, returns step 2.
Further, when bridge floor encounters bridge side barrier post across post purlin car, remove first cantilever lever, keep the lifting of other cantilever lever stressed, move and make first cantilever lever stride across barrier post across post purlin car, connect first cantilever lever, same mode completes other cantilever lever and strides across barrier post.
The present invention has the advantages such as applicability is strong, simple to operate, safety is good, good economy performance, application prospect are good.
Strong adaptability: the limitation can not crossing over obstacle under bridge floor and bridge both having solved existing bridge floor suspension bracket, there is provided again a kind of full hall detection platform that can conveniently have enough to meet the need simultaneously, both the bridge of any wide cut of bridge floor, arbitrarily bridge side obstacle had been applicable to, also be adapted to the bridge that substructure is single pier stud type, two pier stud and many pier studs, under being specially adapted to multiple span bridge, need the examination and repair engineering of large-area construction.
Simple to operate: inspection platform is that standard component is assembled, operate comparatively simple; Can according to the situation factory of the width of platform and barrier post or on-the-spot processing and fabricating across post purlin car, construction and use comparatively simple; Lift-on/Lift-off System can adopt electric block or Chain block as power and mobile device, is everyday devices, simple to operate, if unified for each suspension centre action control being arranged at can be shown on operation control, more simple; Can realize not needing repeatedly to pacify to open and inspect cultivating implementation platform turnover use, enormously simplify constructing operation, detection and construction become more efficient and convenient; All use operations all can be implemented under single power and Chain block coordinate, and simply, unskilled labour power all can be competent at, and has good operability for the connection of dependency structure and component and technique; All installation and removal work can be able to complete across interior low idle job or bridge floor operation any one, substantially increases the ability adapting to engineering boundary condition.
Safety is good: the structure and material involved by inspection platform is general type, by selecting product qualified on market, completing structural checking computation and be reliably connected, can ensure structure use safety; By strictly implementing construction sequence and Operation Key, process safety can be ensured.
Good economy performance: 1. inspection platform adopts common process technique and common section bar to be made, simply, cost of manufacture is lower for assembling and processing; 2. inspection platform operation is simple, and directly across pier and obstruction, greatly reduce the auxiliary construction time, construction efficiency improves greatly, decreases the expense repeatedly had enough to meet the need assembled expense and increase operation platform; 3. inspection platform can way moving, and may be combined with into full hall platform and use for a long time, and the top and the bottom that can be used for bridge are detected and maintenance construction simultaneously, have adapted to the maintenance engineering of bridge preferably, potential very large economic benefit.
Application prospect is good: the detection and the maintenance that both can be applicable to any wide cut of bridge floor, arbitrarily the upper and lower part structure of the bridge of bridge side obstacle, also the bridge that substructure is single pier stud type, two pier stud and many pier studs is adapted to, the engineering of the detection needing large-area construction to have enough to meet the need under being specially adapted to multiple span bridge, maintenance and reinforcing.
Accompanying drawing explanation
Fig. 1 is the structural representation of using state of the present invention.
Fig. 2 is a kind of sectional schematic diagram of using state of the present invention.
Fig. 3 is the another kind of sectional schematic diagram of using state of the present invention.
Fig. 4 is that the present invention crosses the schematic diagram of pier stud at the bottom of bridge across pier stud suspension bracket.
Fig. 5 is the schematic diagram of truss car of the present invention.
Fig. 6 is the lateral view of Fig. 5.
Fig. 7 is the top view of Fig. 5.
Fig. 8 is the schematic diagram crossing bridge floor barrier post across post purlin car
Fig. 9 is the schematic diagram of girder truss of the present invention.
Figure 10 is the schematic diagram of level connection joint sheet of the present invention.
Figure 11 is the schematic diagram of the vertical brace of the present invention.
Wherein: 1, bridge; 2, guardrail; 3, bent cap; 4, across post purlin car; 5, across pier stud suspension bracket; 6, Lift-on/Lift-off System; 6.1, lifting rope; 6.2, power-equipment; 6.3, controller; 7, linkage unit; 8, truss car; 8.1, vertical pole; 8.2, cross bar; 8.3, montant; 8.4, the first hound; 8.5, the second hound; 8.6, shifting roller; 8.7, lateral connection bar; 8.8, longitudinal connecting rod; 8.9, connector; 8.10, cantilever lever; 8.11, balancing weight; 9, truss element; 10, girder truss; 10.1, upper chord; 10.2, lower chord; 10.3, montant; 10.4, brace; 10.5, structure is rotated; 10.6, cloudy head; 10.7, positive head; 10.8, column; 10.9, handrail; 10.10, rotating shaft; 10.11, the fixing card of folding; 11, level connection joint sheet; 11.1, tie-beam; 11.2, longeron; 11.3, gusset plate; 12, vertical brace; 12.1, upper chord; 12.2, lower chord; 12.3, montant; 12.4, brace; 13, first across pier stud suspension bracket; 14, truss element; 15, first girder truss; 16, second girder truss; 17, the 3rd girder truss; 18, the first level connection joint sheet; 19, the second level connection joint sheet; 20, suspension centre; 21, first cantilever lever; 22, pier column; 23, barrier post.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, is convenient to be well understood to the present invention, but they do not form restriction to the present invention.
As Figure 1-4, of the present inventionly a kind ofly cross over inspection platform at the bottom of the beam of bridge pier and barrier post and comprise across post purlin car 4, across pier stud suspension bracket 5, Lift-on/Lift-off System 6 and linkage unit 7, comprising two across post purlin car 4 also can along moving along the bridge and the truss car 8 be arranged symmetrically inside bridge 1 guardrails of both sides 2 to being positioned at, truss car 8 is fitted protruding four the dismountable cantilever levers 8.10 in side of guardrail, hang across pier stud suspension bracket 5 under cantilever lever on often pair of truss car 8 is common respectively by Lift-on/Lift-off System 6, adjacent be connected to form a complete inspection platform across between pier stud suspension bracket 5 by linkage unit 7, multiple truss element 9 arranged along direction across bridge is comprised across pier stud suspension bracket 5, detachablely between adjacent truss element 9 to be fixedly connected with, the truss element being positioned at end arranges four suspension centres be connected with Lift-on/Lift-off System 20.
Truss element 9 comprises three girder trusses 10, described three girder trusses 10 are along suitable bridge to being arranged side by side, described girder truss 10 is arranged along direction across bridge direction perpendicular to bottom bridge, connected by level connection joint sheet 11 between bottom adjacent girder truss 10, level connection joint sheet 11 lays support plate, connected by vertical brace 12 between described girder truss 10 end, described suspension centre is arranged on level connection joint sheet, matches also arrange four with the lifting rope of Lift-on/Lift-off System.In the present embodiment truss car 8 upper cantilever bar 8.10 quantity, the lifting rope 6.1 of Lift-on/Lift-off System 6 and the quantity of power-equipment 6.2 and arrange four across the quantity office of suspension centre on pier stud suspension bracket 5, but be not limited to four, can adjust according to actual conditions.Girder truss 10 in the present embodiment is made up of a slice 3m wide standard purlin sheet, is formed by connecting between adjacent truss beam by the cloudy head on the sheet of standard purlin and positive head pin joint.The length of girder truss 10 is wide and obstruction situation around and determine according to bridge, when needing to regulate entire length, can adopt and wear fork in the middle of the standard purlin sheet of 0.5m, 1m and 2m and be connected; Standard purlin sheet consists of connector (gusset plate or connecting structure) angle steel, square steel, round steel, steel pipe and other shaped steel; Standard purlin sheet is according to manpower feature and structure stress requirement, vertically can divide one deck (entirety is a truss sheet) or two-layer (the assembled connection of upper and lower 2 layers of truss sheet employing pin joint mode, upper strata is mainly used in security protection, and lower floor is mainly used in structure stress).Three standard purlin sheets of truss element in the present embodiment, along bridge to former and later two standard purlin sheets be double-layer structure, middle standard purlin sheet is a Rotating fields.
Lift-on/Lift-off System 6 is arranged on across post purlin car 4 and across between pier stud suspension bracket 5, for the lifting gear across the vertical movement of pier stud suspension bracket 5 can be controlled, each two ends across pier stud suspension bracket 5 respectively arrange a set of, Lift-on/Lift-off System 6 comprises four lifting ropes 6.1, controller 6.3 and four power-equipments 6.3, described four lifting ropes 6.1 match will hang bottom bridge across pier stud suspension bracket 5 with four power-equipments 6.2 respectively, power-equipment 6.2 can be Chain block or electric block, controller 6.3 is arranged on across on pier stud suspension bracket 5, four power-equipments 6.2 of the same side adopt the unified independent control of controller 6.3, and coordinate the operation of both sides totally eight power-equipments, when crossing pier column across pier stud suspension bracket, control the tightness of four lifting ropes.
Linkage unit 7 plays connection function for being supported on two across the skeleton platform between pier stud suspension bracket 5 simultaneously, and provides enough large operating space for constructing; Linkage unit need be convenient to peace and tear open, and can and the girder truss across pier stud suspension bracket between reliably connect; Linkage unit can be the element of construction of shaped steel or truss and expanded metal lath or plate class formation.Linkage unit is provided with multiple, multiple linkage unit is disposed on two across between pier stud suspension bracket along direction across bridge, spacing between adjacent linkage unit is greater than pier column diameter, bed board by laying between adjacent linkage unit is connected, when overpass bridge pier stud, directly bed board is removed, linkage unit namely by.
As viewed in figures 5-8, truss car 8 comprises vertical pole 8.1, cross bar 8.2, montant 8.3, first hound 8.4, second hound 8.5, shifting roller 8.6, lateral connection bar 8.7, longitudinal connecting rod 8.8 and connector 8.9, described vertical pole 8.1, cross bar 8.2, montant 8.3, first hound 8.4 and the second hound 8.5 all can be prefabricated in the factory and form, square trussed construction is connected to form with welding or bolt after being transported to job site, trussed construction inside is provided with balancing weight 8.10, described trussed construction height is higher than guardrail 2 height, described shifting roller 8.6 is arranged at bottom montant 8.3, the cross bar at described trussed construction top is fixedly connected with connector 8.9 near one end of guardrail 2, the connector other end and lateral connection bar 8.7 one end are fixedly connected to form cantilever lever 8.10, be fixedly connected with by longitudinal connecting rod 8.8 between the other end of many lateral connection bars 8.7.Between described cross bar 8.2 and connector 8.9, being all bolted between connector 8.9 and lateral connection bar 8.7, is detachable member, is convenient to cross over bridge floor barrier post across post purlin car 4.Four connectors 8.9 are adopted to be connected with four lateral connection bars 8.7 four of trussed construction top cross bar 8.2 ends, when truss car 8 moves ahead in process, when connector 8.9 encounters barrier post, unclamp connecting bolt above, remove connector, connected by connecting bolt again after by barrier post, leaping over obstacles post can be realized.During use, track or stopping means need be set according to bridge floor road conditions, guarantee that truss car can by manpower in the smooth and easy movement of bridge floor; Height (i.e. the height of cantilever lever) across post purlin car should higher than guardrail or railing certain altitude, and the obstruction that the suspension centre extension elongation on cantilever lever should exceed bridge side is no less than 10cm; Each suspension centre structure across post purlin car need meet force request; Drive forwards by dragging loose device by wire rope across post purlin car.
As shown in Figure 9, be the standard purlin sheet schematic diagram that 3m is wide, it comprises two-layer, and lower floor is stress frame structure, and upper strata is armrest; Described lower floor comprises upper chord 10.1, lower chord 10.2, montant 10.3, brace 10.4, rotates structure 10.5, cloudy 10.6 and sun 10.7, and upper chord 10.1, lower chord 10.2, montant 10.3, brace 10.4 can be other Steel section members such as angle steel, square steel, round steel, steel pipe.Described upper chord 10.1, lower chord 10.2, montant 10.3 and brace 10.4 are fixedly connected to form stress frame structure, one end of upper chord 101 and lower chord 10.2 is provided with positive 10.7, the other end is provided with cloudy 10.6, is fixedly connected with between adjacent standard purlin sheet by positive 10.7 with cloudy 10.6 cooperations; Described armrest comprises column 10.8, handrail 10.9 and rotating shaft 10.10, described upper chord 10.1 is fixedly connected with by rotating structure 10.5 with between rotating shaft 10.10, the column bottom at described armrest two ends is equipped with folding and fixes card 10.11, fixes card 10.11 be fixedly connected with between adjacent armrest by folding.
As shown in Figure 10, Figure 11, level connection joint sheet 11 comprises tie-beam 11.1 and longeron 11.2, described in connect between beam 11.1 and longeron 11.2 and be fixedly connected with by gusset plate 11.3, described gusset plate 11.3 is provided with the connecting bolt for connecting with standard purlin sheet; Described vertical brace 12 is the cage construction be made up of upper chord 12.1, lower chord 12.2, montant 12.3 and brace 12.4.
A using method for inspection platform at the bottom of beam in such scheme, specifically comprises the following steps:
Step 1: install inspection platform bottom bridge floor and bridge, concrete installation process is: 1. under convenient spanning of installing assembled two across pier stud suspension bracket 5, and vertically bridge axis direction is placed on the position of spanning near bridge pier; 2. four truss cars 8 are being arranged across bridge floor bilateral symmetry above pier stud suspension bracket 5; 3. the upper tie point (lifting rope top) of Lift-on/Lift-off System 6 is connected with the cantilever lever 8.10 on truss car 8, lower tie point (lifting rope bottom) is connected with across the suspension centre on pier stud suspension bracket, controller 6.3 is fixed on the end across pier stud suspension bracket 5 simultaneously; 4. two are promoted across pier stud suspension bracket 5 to the height of about 1m by Lift-on/Lift-off System 6, and ensure that two across the basic same high level of pier stud suspension bracket 5, piecemeal installs linkage unit 7, makes two to form across pier stud suspension bracket 5 and linkage unit 7 inspection platform that can cover boundary of works area;
Step 2: control Lift-on/Lift-off System 6 and promote inspection platform and carry out long working construction to the height in Job Operations face;
Step 3: after single span has been constructed, transfers below inspection platform to bent cap height by Lift-on/Lift-off System 6, removes adjacent across the linkage unit 7 between pier stud suspension bracket 5;
Step 4: synchronously start four, bridge floor across post purlin car 8 along bridge to walking, under drive bridge, inspection platform moves and moves along the bridge, when inspection platform move to first across pier stud suspension bracket 13 truss element 14 along bridge to first girder truss 15 can touch bridge pier cylinder time, the suspension centre 20.1 on the level connection joint sheet of the direction across bridge side corresponding with it is loosened by controller 6.3, power is transformed into other three suspension centres 20.2, 20.3, on 20.4, remove first girder truss 15 and the first level connection joint sheet 18 that connect corresponding to it, Fig. 4 is the schematic diagram after dismounting first girder truss 15 and the first level connection joint sheet 18,
Step 5: when the bridge floor that walks on can touch bridge pier cylinder across post purlin car to second girder truss 16 of truss element 14, connect first girder truss 15, tightened up the suspension centre 20.1 on the level connection joint sheet of the direction across bridge side corresponding with it by controller; Loosen the suspension centre 20.2 on the girder truss of the direction across bridge side corresponding with second girder truss simultaneously, power is transformed on other three suspension centres 20.1,20.3,20.4, removes second girder truss 16 and the second level connection joint sheet 19 that connect corresponding to it;
Step 6: when the bridge floor that walks on can touch bridge pier cylinder across post purlin car to the 3rd purlin sheet beam 17 of truss element, connect second girder truss 16 and the first level connection joint sheet 18, tightened up the suspension centre 20.2 on the level connection joint sheet of the direction across bridge side corresponding with it by controller; Loosen the suspension centre 20.4 on the girder truss of the direction across bridge side corresponding with the 3rd girder truss simultaneously, power is transformed on other three suspension centres 20.1,20.2,20.3, removes the 3rd girder truss 17; Now walk on across post purlin car until first departs from pier column 22 completely across pier stud suspension bracket 13, connect the second level connection joint sheet 19 and the 3rd girder truss 17, cross over linkage unit 7 time, directly remove the bed board between adjacent linkage unit 7, linkage unit namely by.
Step 7: the bridge floor that walks on, across post purlin car, completes second across pier stud suspension bracket overpass bridge pier stud according to step 4-6, returns above-mentioned steps 2.
In such scheme, when bridge floor encounters bridge side barrier post 23 across post purlin car 8, as shown in Figure 8, remove the connector on first cantilever lever 21, keep the lifting of other cantilever lever stressed, moving makes first cantilever lever 21 stride across barrier post 23 across post purlin car 8, connect first cantilever lever 21, same mode completes other cantilever lever and strides across barrier post.
The content be not described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. can cross over inspection platform at the bottom of the beam of bridge pier and barrier post for one kind, it is characterized in that: comprise across post purlin car, across pier stud suspension bracket, Lift-on/Lift-off System and linkage unit, describedly comprise two to being positioned at the truss car that can be arranged symmetrically along moving along the bridge inside bridge guardrails of both sides across post purlin car, described truss traffic allowance closes the protruding multiple dismountable cantilever lever in side of guardrail, hang across pier stud suspension bracket under cantilever lever on often pair of truss car is common respectively by Lift-on/Lift-off System, adjacent is connected by linkage unit across between pier stud suspension bracket, described across pier stud suspension bracket comprise multiple along direction across bridge arrange truss element, detachablely between adjacent truss element to be fixedly connected with, the truss element being positioned at end arranges multiple suspension centre be connected with Lift-on/Lift-off System.
2. a kind ofly as claimed in claim 1 cross over inspection platform at the bottom of the beam of bridge pier and barrier post, it is characterized in that: described truss car comprises vertical pole, cross bar, montant, the first hound, the second hound, shifting roller, lateral connection bar, longitudinal connecting rod and connector; Described vertical pole, cross bar, montant, the first hound and the second hound are fixedly connected to form square trussed construction, described trussed construction inside is provided with balancing weight, described trussed construction height is higher than guardrail height, described shifting roller is arranged at bottom montant, the cross bar at described trussed construction top is bolted to connection near one end of guardrail and connector, the connector other end and lateral connection bar one end are bolted to connection formation cantilever lever, are fixedly connected with between the other end of many lateral connection bars by longitudinal connecting rod.
3. a kind ofly as claimed in claim 2 cross over inspection platform at the bottom of the beam of bridge pier and barrier post, it is characterized in that: be all bolted between described cross bar and connector, between connector and lateral connection bar.
4. a kind ofly as claimed in claim 1 cross over inspection platform at the bottom of the beam of bridge pier and barrier post, it is characterized in that: described truss element comprises three girder trusses, described three girder trusses are along suitable bridge to being arranged side by side, described girder truss is arranged along direction across bridge direction perpendicular to bottom bridge, connected by level connection joint sheet between bottom adjacent girder truss, level connection joint sheet lays support plate, connected by vertical brace between described girder truss end, described girder truss is made up of one or more pieces standard purlin sheets, described level connection joint sheet arranges multiple suspension centre be connected with Lift-on/Lift-off System.
5. a kind ofly as claimed in claim 4 cross over inspection platform at the bottom of the beam of bridge pier and barrier post, it is characterized in that: described standard purlin sheet comprises two-layer, and lower floor is stress frame structure, and upper strata is armrest; Described lower floor comprises upper chord, lower chord, montant, brace, rotation structure, cloudy head and positive head, described upper chord, lower chord, montant and brace are fixedly connected to form stress frame structure, one end of upper chord and lower chord is provided with positive head, the other end is provided with cloudy head, is fixedly connected with between adjacent standard purlin sheet by positive head with cloudy head cooperation; Described armrest comprises column, handrail and rotating shaft, and described upper chord is fixedly connected with by rotating structure with between rotating shaft, and the column bottom at described armrest two ends is equipped with the fixing card of folding, fixedly fastens connection between adjacent armrest by folding.
6. a kind ofly as claimed in claim 4 cross over inspection platform at the bottom of the beam of bridge pier and barrier post, it is characterized in that: described level connection joint sheet comprises tie-beam and longeron, described connecing between beam and longeron is fixedly connected with by gusset plate, and described gusset plate is provided with the connecting bolt for connecting with standard purlin sheet; Described vertical brace is the cage construction be made up of upper chord, lower chord, montant and brace.
7. a kind ofly as claimed in claim 1 cross over inspection platform at the bottom of the beam of bridge pier and barrier post, it is characterized in that: Lift-on/Lift-off System comprises many lifting ropes, controller and multiple Chain block or electric block, described many lifting ropes match with multiple Chain block or electric block respectively, and described controller controls the operation of multiple Chain block or electric block.
8. a kind ofly as claimed in claim 1 cross over inspection platform at the bottom of the beam of bridge pier and barrier post, it is characterized in that: described linkage unit is for forming skeleton platform by shaped steel or truss and expanded metal lath or plate class, described linkage unit is provided with multiple, multiple linkage unit is disposed on two across between pier stud suspension bracket along direction across bridge, spacing between adjacent linkage unit is greater than pier column diameter, and the bed board by laying between adjacent linkage unit is connected.
9. at the bottom of the beam as described in claim 1-8, a using method for inspection platform, is characterized in that, comprises the following steps:
Step 1: install inspection platform bottom bridge floor and bridge;
Step 2: control Lift-on/Lift-off System lifting inspection platform carries out long working construction to the height in Job Operations face;
Step 3: after single span has been constructed, transfers below inspection platform to bent cap height by Lift-on/Lift-off System;
Step 4: synchronously start four, bridge floor across post purlin car along bridge to walking, under drive bridge, inspection platform moves and moves along the bridge, when inspection platform move to first across pier stud suspension bracket truss element along bridge to first girder truss can touch bridge pier cylinder time, the suspension centre on the level connection joint sheet of the direction across bridge side corresponding with it is loosened by controller, power is transformed on other suspension centre, removes first girder truss and the first level connection joint sheet that connect corresponding to it;
Step 5: when the bridge floor that walks on can touch bridge pier cylinder across post purlin car to second girder truss of truss element, connect first girder truss, the suspension centre on the level connection joint sheet of the direction across bridge side corresponding with it is tightened up by controller, loosen the suspension centre on the girder truss of the direction across bridge side corresponding with second girder truss simultaneously, power is transformed on other suspension centre, removes second girder truss and the second level connection joint sheet that connect corresponding to it;
Step 6: when the bridge floor that walks on can touch bridge pier cylinder across post purlin car to the 3rd purlin sheet beam of truss element, connect second girder truss and the first level connection joint sheet, tightened up the suspension centre on the level connection joint sheet of the direction across bridge side corresponding with it by controller; Loosen the suspension centre on the girder truss of the direction across bridge side corresponding with the 3rd girder truss simultaneously, power is transformed on other suspension centre, removes the 3rd girder truss; Now to walk on across post purlin car until first departs from pier column completely across pier stud suspension bracket, connect the second level connection joint sheet and the 3rd girder truss;
Step 7: the bridge floor that walks on, across post purlin car, completes second across pier stud suspension bracket overpass bridge pier stud according to step 4-6, returns step 2.
10. using method as claimed in claim 9, it is characterized in that: when bridge floor encounters bridge side barrier post across post purlin car, remove the connector on first cantilever lever, keep the lifting of other cantilever lever stressed, moving makes first cantilever lever stride across barrier post across post purlin car, connect first cantilever lever, same mode completes other cantilever lever and strides across barrier post.
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| CN201410548268.9A CN104358211B (en) | 2014-10-16 | 2014-10-16 | Inspection platform and using method thereof at the bottom of a kind of beam that may span across bridge pier and barrier post |
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| CN106368122A (en) * | 2016-10-18 | 2017-02-01 | 湖北华舟重工应急装备股份有限公司 | Self-propelled dual-beam bridge maintenance platform |
| CN106835994A (en) * | 2017-03-08 | 2017-06-13 | 广州展亚土木工程技术有限公司 | Portable construction hanging basket and excessively bridge pier method |
| CN107059506A (en) * | 2017-05-16 | 2017-08-18 | 中国铁道科学研究院铁道建筑研究所 | A kind of plate-type ballastless track track plates replacing options |
| CN107217836A (en) * | 2017-07-07 | 2017-09-29 | 中国建筑第六工程局有限公司 | A kind of construction hanging basket suspension arrangement for steel construction shelter bridge |
| CN107299598A (en) * | 2017-07-13 | 2017-10-27 | 重庆三峡学院 | A kind of mobile device for being used for bridge machinery and reinforcing |
| CN107299598B (en) * | 2017-07-13 | 2019-02-22 | 重庆三峡学院 | A kind of mobile device for bridge machinery and reinforcing |
| CN107761561A (en) * | 2017-10-19 | 2018-03-06 | 武汉武桥交通装备技术有限公司 | A kind of bridge inspection vehicle system |
| CN107761561B (en) * | 2017-10-19 | 2019-03-05 | 武汉武桥交通装备技术有限公司 | A kind of bridge inspection vehicle system |
| CN109457613A (en) * | 2018-09-29 | 2019-03-12 | 上海市政工程设计研究总院（集团）有限公司 | A kind of bridge maintenance purlin vehicle construction method of installation |
| CN111041982A (en) * | 2019-12-25 | 2020-04-21 | 贵州桥梁建设研究院有限公司 | Double-width bridge double-suspension-point bridge inspection vehicle |
| CN113389366A (en) * | 2021-07-28 | 2021-09-14 | 中船黄埔文冲船舶有限公司 | Arch bridge folds mouth with chain platform |
| CN113640154A (en) * | 2021-08-06 | 2021-11-12 | 长安大学 | Connecting and loading device for bridge pier column explosion test |
| CN113640154B (en) * | 2021-08-06 | 2024-01-30 | 长安大学 | Connection loading device for bridge pier column explosion test |
| CN113565018A (en) * | 2021-09-07 | 2021-10-29 | 曾普 | Bridge construction operation platform |
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Address after: Room 2101-2104, 21 / F, unit a, block a, Hubei science and technology venture building, Xiaohongshan East District, Wuchang District, Wuhan City, Hubei Province, 430061 Patentee after: CCCC Road & Bridge Special Engineering Co.,Ltd. Address before: 430077 Floor 20, Dongsha Building, No. 122, Zhongbei Road, Wuchang District, Wuhan City, Hubei Province Patentee before: CCCC ROAD & BRIDGE SPECIAL ENGINEERING Co.,Ltd. |